Chemical Formula of Polyatomic Ionic Compounds

Q. What is hydrogen ion?

Q.

Write a chemical formula for a molecule that contains three Hydrogen atoms (H), one Phosphorus (P), and four Oxygens (O).

1. None of the choices

2. $H_{2}PH{O}_4$

3. $H_{3}P{O}_4$

4. $H_{2}OPH{O}_3$

Q.

The molecular formula of baking soda (sodium bicarbonate) is

1. $NaC{O}_3$

2. $NaHC{o}_3$

3. $NaHC{O}_3$

4. $NaHC{O}_2$

Q.

In compound formed with polyatomic ion, the ion is enclosed in a bracket before writing the number to indicate the ratio.

1. False

2. True

Q. Which of the following is the correct chemical formula for hydrogen bicarbonate?

1. $HS{O}_3^{1-}$
2. $HC{O}_3^{2-}$
3. $HC{O}_3^{1-}$
4. $C{O}_3^{2-}$

Q.

The molecular formula of sugar is

1. $C_{11}{H}_{22}{O}_{12}$

2. $C_{12}{H}_{12}{O}_{11}$

3. $C_{22}{H}_{22}{O}_{11}$

4. $C_{12}{H}_{22}{O}_{11}$

Q.

The molecular formula of a compound is the number of___of each element in its one molecule.

Q. The chemical formula of ammonium nitrate is _________.

1. $N{H}_{4}N{O}_3$
2. $N{H}_4(N{O}_3{)}_2$
3. $N{O}_{3}N{H}_4$
4. $(N{H}_4{)}_{2}N{O}_3$

Q.

39. Write the formulae of the following compounds. Also, name the elements present in them.

a) Water

b) Ammonia

c) Methane

Q.

the common name for sodium hydrogen carbonate?

Q.

What is molecular formula?

Q.

What would be empirical formula mass of$C_6{H}_6$?

Q. Which amongst the following is the formula of bisulphate ion?

1. $S{O}_3{}^{2-}$
2. $S{O}_4{}^{2-}$
3. $HS{O}_3{}^{-}$
4. $HS{O}_4{}^{-}$

Q. The common name of sodium hydroxide is
(a) caustic soda
(b) baking soda
(c) quick lime
(d) slaked lime

Q.

What is the positive ion in sodium sulphate?

1. Sulphide ion

2. Sodium ion

3. Sulphite ion

4. Sulphate ion

Q.

What is meant by an element and a compound?

Q.

The ionic compound containing ${Fe}^{3+}$ and $(S{O}_4{)}^{2-}$ would have the formula

1. 

2. 

3. 

4. 

Q. Which amongst the following is the formula of bisulphate ion?

1. $S{O}_4{}^{2-}$
2. $HS{O}_3{}^{-}$
3. $HS{O}_4{}^{-}$
4. $S{O}_3{}^{2-}$